gcc/testsuite/gcc.c-torture/compile/20010605-2.c

   1 /* Origin: Joseph Myers <jsm28@cam.ac.uk>.  */
   2 /* As an extension, GCC allows a struct or union to be cast to its own
   3    type, but failed to allow this when a typedef was involved.
   4    Reported as PR c/2735 by <cowan@ccil.org>.  */
   5 union u { int i; };
   6 typedef union u uu;
   7 union u a;
   8 uu b;
   9
  10 void
  11 foo (void)
  12 {
  13   a = (union u) b;
  14   a = (uu) b;
  15   b = (union u) a;
  16   b = (uu) a;
  17 }